[450] Gel cell batteries for primary station use?

[Vinnie Grosso]

Rich,

Yes, great to see everyone. Rich work on the details for NH. I'm opening a 
new account on Picasa -- I was thrown off Picasa., Kodak, Nikon, and 
Phanfare previously for non-use, too much memory, being an early user, you 
name it. 

Vinnie

On 23 Mar 2009 at 16:33, Rich wrote:

> Seems like a good plan, if you are going to spend the money why not
> have less noise and emergency power as added benefits? You may be able
> to find sealed heavy duty  GEL Cells used for cheap. There was someone
> selling nice ones at the Newtown hamfest a few years back, remember
> Bob?
> 
> Just wanted to say how nice it was to see everybody yesterday! Looking
> forward to New Hampshire in May!
> 
> Rich
> -- 
> -------+++++--------
> Most people get a fair amount of fun out of their lives, but on
> balance life is suffering, and only the very young or very foolish
> imagine otherwise. - George Orwell ----- Original Message ----- From:
> "Vinnie Grosso" <vinnie at vinnievision.com> To: "144.450 Mailing List"
> <450 at lists.vhfwiki.com>; "David McKenzie" <kb1fsy at vhfwiki.com> Sent:
> Monday, March 23, 2009 3:02 PM Subject: Re: [450] Gel cell batteries
> for primary station use?
> 
> 
> > Dave,
> >
> > Great to hear about the large gel cells at 70 amp. that may be the
> > answer
> >
> > Vinnie
> >
> >
> > On 23 Mar 2009 at 13:07, David McKenzie wrote:
> >
> >>
> >> Vinnie,
> >>
> >> From what I understand, the gel cells are functionally the same to
> >> deep cycle batteries except that they are sealed, exhaust no vapors
> >> while charging (deep cycle puts out some sort of toxic gasses i
> >> think) and cost a bit more. It is good news that a lot of hams are
> >> using batteries to power their stuff, that means there is a wealth
> >> of information out there, assuming I can find it. A 70Ah gel cell
> >> battery appears to be about a little less than half the price of a
> >> 70 amp ICS supply. Looks like you are saying that I need a float
> >> charger from the linear to the battery and then a voltage regulator
> >> between the battery and the equipment. Sounds reasonable, I'll look
> >> more into it.
> >>
> >> On Mon, Mar 23, 2009 at 12:37 PM, Vinnie Grosso
> >> <vinnie at vinnievision.com> wrote:
> >>     David,
> >>
> >>     I think the better answer could be use a 70 Amp deep cycle
> >> battery. I
> >>     believe
> >>     you need to have at last 2X times the reserve in the battery,
> >>     or
> >> you will get
> >>     reverse EMF back to the radio. You will also need to build a
> >> zener based
> >>     regulator to make sure nothing ever gets over voltage. Good
> >>     news
> >> is that
> >>     many hams do this, and the Green movement now has much data on
> >> home
> >>     controllers that will have some info as well.
> >>
> >>     Dam good idea -- even though you do not think you will need it
> >> to power the
> >>     radios -- you will at some point.
> >>
> >>     Also I was running my 746Pro on car batteries, and the noise
> >> floor almost
> >>     diappeared -- it's amazing how good 80M and 20M got with the
> >> lower noise
> >>     floor.
> >>
> >>     Vinnie
> >>
> >>
> >> On 23 Mar 2009 at 11:28, David McKenzie wrote:
> >>
> >> >
> >> > Instead of buying a 70 amp supply or a second 50 amp supply to
> >> > parallel, I am considering picking up a large gel cell battery
> >> and
> >> > fast/float charger to run the amp all the time and the radios
> >> during a
> >> > power outage. I don't know very much about batteries. Here's what
> >> I do
> >> > know:
> >> >
> >> > Rated in ampere-hour, which pretty much means how many amps can
> >> be
> >> > drawn until dead over a specific time (20 hours supposedly is
> >> > standard). Charging rate should always be 10% or less of Ah
> >> rating.
> >> > Float chargers exist relatively cheaply that allow the battery to
> >> be
> >> > connected to a constant voltage supply (existing astron supply)
> >> > indefinitely.
> >> >
> >> > My questions are really as follows:
> >> >
> >> > What size battery would I need to "buffer" a 60-70 amp low duty
> >> cycle
> >> > load to power the amplifier? I'd assume the amp would connect to
> >> the
> >> > battery directly and then the battery to a charging circuit with
> >> > protections for when AC is removed from the CVS.
> >> >
> >> > Since my goal is not long term battery backup but to run high
> >> current
> >> > devices for short periods, would a smaller battery on a constant
> >> > supply be the best bet? Do you need to match the Ah rating to
> >> the
> >> > instantaneous maximum current draw?
> >> >
> >> > Is this just a dumb idea, and I should buy more power supplies?
> >> >
> >> > -Dave
> >> >
> >>
> >>
> >>     The best way to predict the future....is to invent it
> >>     Carl Mangold
> >>
> >>
> >>     _______________________________________________
> >>     450 mailing list
> >>     450 at lists.vhfwiki.com
> >>     http://lists.vhfwiki.com/cgi-bin/mailman/listinfo/450
> >>
> >>
> >
> >
> > Vincent Grosso
> > Vontage and Cell 917-546-6661
> > The Best Way to Predict the Future is to Invent it
> > Carl Mangold
> > _______________________________________________
> > 450 mailing list
> > 450 at lists.vhfwiki.com
> > http://lists.vhfwiki.com/cgi-bin/mailman/listinfo/450 
> 
> _______________________________________________
> 450 mailing list
> 450 at lists.vhfwiki.com
> http://lists.vhfwiki.com/cgi-bin/mailman/listinfo/450
> 

The best way to predict the future....is to invent it
Carl Mangold


_______________________________________________
450 mailing list
450 at lists.vhfwiki.com
http://lists.vhfwiki.com/cgi-bin/mailman/listinfo/450